Reciprocating-scoop drag.



J. W. SACKETT.

' RECIPROCATING SCOOP DRAG.

APPLICATION FILED AUG. 30, 1912.

, 1,068,933. Patented July 29, 1913.

WITNESSES Ill/VENTOR Qmm V (/0/20 %zr/e/z Sam M V Arrbmvsrs wLUMmAPLANDURAPH cu.,wAsmNa'roN, n. c.

J. W. SAGKETT.

RECIPROGATING scour DRAG.

APPLICATION FILED AUG. 30, 1912.

3 SHEETS-SHEET 2.

WITNESSES INVENTOH 6 RM PM am zmmm MM ATTORNEYS I n cu. WASHINGTON. ILc.

Patented July 29, 1913.

J. W. SAGKETT.

RBGIPROGATING. SCOOP DRAG.

APPLICATION FILED AUG. 30, 1912.

1 ,b68,933, Patented July 29, 1913.

3 SHEETSSHEET 3.

WITNESSES INVENTOR ATTORNEYS JOHN WARREN SACKETT, OF JACKSONVILLE,FLORIDA.

REGIPROGATING-SCOOP DRAG.

Specification of Letters Patent;

. Patented July 29, 1913.

7 Application fi1edAugust30, 1912. Serial No. 717,885.

To all whom it may concern:

Be it known that I, JOHN W'ARREN SACKETT, a citizen of the UnitedStates, and a resident of J a'cksonville, in. the county of Duval andState of Florida, have invented a new and Improved Reciprocating-ScoopDrag, of which the following is a full, clear, and exact description.

This invention relates to hydraulic dredging machinery, and hasparticular reference to attachments for the lower end of the hydraulicpipe through which. the dredged material, hereinafter referred to forconvenience as mud, is to be conveyed.

Among the objects of this invention is to improve the mouth pieces forsuch pipes, whereby the same are better adapted for operating upon allkinds of bottoms; that is to say, whereby the operation ofdredging maybe carried on with the utmost speed and capacity of the machinery, andwhereby the likelihood of breakage, damage or obstruction to theattachments will bereduced to a minimum.

The foregoing and other objects of the invention are attained? by themechanism hereinafter fully described and. claimed, and illustrated inthe accompanying drawings, in which similar characters of referenceindicate corresponding parts in allthe views, and in which 7 Figure 1 isa side elevation of one form. of the reciprocating scoop dragconstituting the subject matter of this invention; Fig- 2 is a view ofthe same looking toward the left of Fig. 1; Fig. 3 is a verticaltransverse section on the line 33. of. Fig, 1; Fig. 4 is a verticallongitudinal sectionnon the line 4:& of Fig. 2; Fig. 5 is a bot-tomplanview of the cutter or guard support; Fig. 6 is a detail view inelevation of an attachment which may be used in connection with thedrags; Fig. 7 is a side elevation ofa slightly modified form of theinvention; andFig. 8 is a vertical longitudinal seotionof thesame.

Referring particularly to the drawings, I show at 10 one form ofmouthipiece-or'hoo'd which is adapted for attachment in any suitablesubstantial manner to the lower end of the suction pipe of a. hydraulicdredgeg i being understood in this art that such pipe will be extendedinto the sea or river to be dredged and maintained at any suitable anglewith respect to the dredge or vessel which. carries the operating pumpand other mechanism. The mechanism justreferred to constitutes per se nopart of this present improvement, suffice it to say, however, that anywell known rigging or. tackle will be used to control the elevation ofthe hood, such tackle being connected as by means of the ears 11 at theupper portion of the hood. At each end of the hood is connected in anysuitable manner a clevis or ring 12,. and themechanism contemplates thatthere will be a draft cable or the like connected. directly orindirectly to each of said rings, whereby the hood will be drawnlaterally for digging or dredging operation, the draft being applied tosaid rings in alternation. The illustration in Fig. 1 represents theposition of the movable'parts when the drag is presumed to be drawntoward the right.

Pivotally connected by means of a. transverse pivot 13 at each end ofthe hood is a part which may be called a scoop plate 14,

the lower portion of which is adapted to extend downwardly into diggingposition, as indicated at the left in Fig. 1, or which may be foldedinto nested position, as indicated at the right of said figure; As shownin the first figures, when operating upon certain character of bottoms,as, for instance, the hard bottoms, I prefer to employ a series or setof auxiliary scoop plates 1516, each inner plate being slightly shorterthan the one nextto it. The auxiliary plates are mounted upon shafts 17so as to rotate there.- with. All of the'scoop plates are connected bymeansvof a bar 18 and a series'of links 19-19 for simultaneousoperation, or reciprocation. The links 19 are connected to the upperport-ions of'the mainscoopplates 14,.and hence tension or. draft upon, aring 12 will draw upon the bar 18, andsthrough the, several link.connections above described will cause" the scoop, plates on that end ofthe hood opposite-the ringjustmentioned to be projected downwardly; intodigging; posi: tion, and.v at" the-same time: the scoop plates adjacentthe advancing end of the hood will be nested, as indicated in Fig. 4.One of the primary advantages of this type of dredge drag is that whenthe device becomes clogged, as when operating upon stiff clay, thetrouble may be relieved by reversing the draft upon the rings 12; thatis to say, alternating the draft several times with the obvious resultthat the clogging material will be freed and yet the actual dredgingoperation will not be delayed nor interfered with in any way.

As shown at 20 I provide a means for introducing a stream of water underpressure, such water being directed downwardly through a series ofnozzles 21 in comparatively small jets for the purpose of loosening themud, such water being supplied in any approved manner through aconnecting pipe 22. The'nozzles 21 are of the peculiar form shown in theseveral figures, and as indicated particularly in Fig. 5, each of themis elongated in a direction parallel to the longitudinal axis of thehood, whereby the nozzles also constitute cutters for cutting or digginginto the mud. Again, the series of cutters and the supporting meanstherefor constitute an effective guard, preventing the admission oflarge stones, wreckage, or other obstructions, which, if permitted toenter and pass through the suction pipe might damage the pump mechanism.The cutters 21 may be secured in place within the hood in any suitablemanner, but as shown herein they are connected to, or may be integralwith, a plate 23 bolted to the structure of the pipe 20. As indicatedespecially in Figs. 4 and 8, the plate 23 also serves as a positive stopto limit the inward movement of the pivoted scoops.

That form of the invention shown in Figs. 7 and 8 is of the same generalnature with respect to the main scoop plates, which are coupled togetherfor simultaneous reciproca tion, the plates 1a in this instance beingpivoted at 18, as above, and coupled together by means of a bar 18. Therings 12 are pivotally connected to the upper portions of the plateslet, preferably at points intermediate the pivots 13 and the pivotalconnections 18 for the bar. The hood 10 in this form of the inventionmay be shorter than in the other case, but is provided preferably with asimilar means for introducing water under pressure through the pipe 20and cutters 21.

The attachment shown in Fig. 6 comprises a head 24 adapted to be rigidlyconnected to the lower end of the suction pipe, the said head beingcurved, and pivotally mounted at 25 thereon is an oscillatory cap 26made in sections, bolted together at 27, and to which cap the hood 10 isconnected or made integral. By this means the tension or draft upon theswinging cable on either end of the hood will not only result in closingthe scoop or scoops on the side on which the tension is exerted and-atthe same time opening the scoop or scoops on the opposite side, but willalso cause the end of the drag on which the draft is exerted to riseabove the other end, thus presenting a more favorable position of thedrag to the bottom being operated upon. In other words, in certaincharacter of mud a greater degree of inclination of the digging ends ofthe scoop is necessary or desirable than at other times, and by theprovisionof the auxiliary attachment the apparatus may be arranged tosuit the various conditions.

The several parts of this invention may be made of any suitablematerials, and the relative size and proportions thereof may be p variedto a considerable extent without departing from the spirit of theinvention herein claimed. 7

Having thus described my invention,.what I claim as new and desire tosecure by Letters Patent is 1. In a reciprocating scoop drag, thecombination of a hood, a pair of oppositely arranged scoop platespivoted in the ends of the hood, means coupling said scoop platestogether for simultaneous reciprocation, each of said scoop plates beingadapted-to operate while the other is carried out of operation, andguard means extending across the interior of thehood serving to limitthe upward swing of the scoop plates.

2. In a reciprocating scoop drag, the combination of a hood, a pluralityof scoop plates pivoted in said hood, means coupling said scoop platestogether for simultaneous reciprocation in alternation, and a guardextending across the middle portion of the interior of the hoodsubstantially parallel to the plate pivots cooperating with said scoopplates to prevent large obstacles from enter ing the hood.

3. In a reciprocating scoop drag, the combination of a hood, a mainscoop plate pivoted in each end of said hood, said plates being arrangedin opposite directions to each other, auxiliary scoop plates pivotedadjacent and substantially parallel to the aforesaid scoop plates, andmeans coupling all of said plates together for simultaneousreciprocation, the plates at one end being extended'for diggingoperation while those at the other end are nested within the hood.

4. In a device of the character set forth, the combination of a hood,digging mechanism movably mounted in said hood, a plate extending acrossthe interior of the hood and serving to limit the movement of thedigging mechanism in one direction,'and'a series of cutter nozzlessecured to and extending downwardly from said plate' 5. In areciprocating scoop drag, the com,

bination of a hood, digging mechanism 'movname to this specification inthe presence of ably mounted in said hood, and a combined twosubscribing Witnesses. cutter and guard mechanism Within the hoodcooperating with said digging mechanism, JOHN WARREN SAGKET'I' saidcombined mechanism including a series Witnesses: of cutter nozzles,substantially as set forth. CHAs. F. PAGE,

In testimony whereof I have signed my GEO. S. BOURNE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

